No abstract

No abstract

Analog integrated circuits are more sensitive to process variations than their digital counterparts. This fact, along with the lack of analog standard cells, results in tedious layout of analog circuits. Layout techniques such as interdigitation can make key analog components less sensitive to process variation, but requires complicated and time consuming full-custom layout. This paper presents an analog layout assistant (ALAS!), that automatically generates matched and balanced CMOS component pairs with minimal input parameters from the user.

A cross-correlation method of measuring the impulse response of linear systems is presented. In theory, by using this method, the impulse response of any linear system can be obtained while the system is being used under normal operation with no significant distortion of the normal system output. A cross-correlation system was modeled and constructed using discrete components and simulation and experimental results are presented. Unfortunately, these results show that the extracted impulse response iS severely distorted by the normal system input and the system noise. However, by averaging and interleaving methods, the impulse response of any linear system can be. ._ extracted with a high degree of accuracy. 0 199.5 American Institute of Physics.